【什么是方式状语从句】方式状语从句表示主句中动作或状态的方式或方法，多半是用比喻说明主句内容或原物，是被说明的人、物形象具体化。常由as，just as，as if，as though等引导。
1. 由as(如，像)引导
I will do as you told me. 我将会按照你告诉我的那样去做。
The moon has no light of its own as the sun has. 月球不像太阳那样，它本身不发光。
as之前可用just或exactly加强语气。例如：
Most plants need air just as they need water.大部分的植物需要空气，正如它们需要水一样。
as引导的从句谓语句首时，主句常由so引出。例如：
As you treat me, so I shall treat you. 你怎样对待我，我也将怎样对待你。
Just as there are difference forms of matter, so there are different forms of energy.
正像有各种形式的物质一样，也有各种形式的能。
as引导的从句的省略形式：
从句的主语、谓语有时可以省略：
1． 省略主语。无论从句和主句的主语是否一致，从句的主语可以省略。例如：
English is not difficult to learn, as (it )is generally supposed.
(主语一致)英语并不像一般人想象的那样难学。
He wrote as(it) follows. (主谓不一致) 他写的如下。
2. 省略谓语或谓语中的表意动词。例如：
The study of science needs time, as any other subjects (does).
学科学像学其他学科一样，需要时间。
The electricity does not move through the insulator as it would (move) through a conductor.
电不会像导体一样通过这个绝缘体。
3. 主谓全省略。如：
He worked as usual (=···as it was usual). 他像平时那样工作。
2. 专有句型
“A···to B+ what/ as+ C···to D” (A···对于B好比C···对于D一样)；
“What C···to D, that A···to B” (C对于D 恰似A 对于B一样)。例如：
Reading is to the mind what exercise is to the body. 读书之于心灵，犹如锻炼之于身体。
What blood vessel is to a man’s body, that railway is to transportation.
铁路对于运输。好比血脉对于人的身体一样。
3. 由as if， as though引导
两者的意义和用法相同，引出的状语从句谓语多用虚拟语气，表示与事实相反，有时也用陈述语气，表示所说情况是事实或实现的可能性较大。汉译常作"仿佛……似的"，"好像……似的"，例如：
They completely ignore these facts as if (as though) they never existed.
他们完全忽略了这些事实，就仿佛它不存在似的。（与事实相反，谓语用虚拟语气。）
He looks as if (as though) he had been hit by lighting.
他那样子就像被雷击了似的。（与事实相反，谓语用虚拟语气。）
注意：从句谓语如果是be动词，则不论从句主语是单、复数，均用were。例如：
It’s all, all covered with blots as if she were crying on the paper.
到处，到处都是泪痕，像是她趴在信纸上哭过。
It looks as if the weather may pick up very soon.
看来天气很快就会好起来。（实现的可能性较大，谓语用陈述语气。）
as if， as though 引导的从句常用省略形式，往往从句中只剩下介词动词、不定式短语、分词短语或形容词短语。例如：
He opened his lips as if（he was going）to say something.
（不定式短语）他张开嘴唇，好像要说什么。
He walked forward as if（as though）making a speech.
（分词短语）他向前走了几步，似乎要说什么。
The clouds has disappeared as if（they had done）by magic.
（介词短语）云彩好像变魔术似地消失了。
He fell off his horse as if（he had been）shot.
（过去分词被动语态）他从马上跌下来，好像被射中了。
He hurriedly left the moon as though（she were）angry.
（形容词）他匆忙地离开了房间，好像生气的样子。
4. the way, how引导
用于口语或非正式文体中。
the way = the way that, the way in which / in the way
how = in whatever manner
He doesn’t speak the way I do. 他说话的方式和我的不一样。
Do it the way you were taught. 要按照教导你的那样去做。
This steak is cooked just how I like it. 这牛排正式在按照我喜欢的那样去做。
5. 由like引导
在口语或非正式文体中，有时可用like代替as或as if。例如：
I wish I could paint like（=as）he did. 我希望我能像他那样画画。
It rained like（=as if）the sky were falling. 下着大雨，好像天要塌下来似的。
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